<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 100px;
            height: 100px;
            background-color: pink ;
        }
        .box2{
            width: 100px;
            height: 100px;
            background-color: yellow;
        }

        input{
            width: 300px;
            border:5px solid #000;
        }
        button{
            width: 100px;
            height: 40px;
        }
        span{
            width: 100px;
            height: 100px;
            color:red ;
        }
    </style>
</head>
<body>
    <div class="box"></div>
    <div class="box2"></div>
    <input type="text">
    <button>点击</button>
    <hr>
    <a href="https://www.baidu.com">百度</a>
    <span>谷歌</span>
</body>
</html>